Weil-McLain SlimFit 2 Series Manual page 43

SlimFit ® Series 2
DIRECT VENT — Vertical
(Category IV)
Figure 41
Termination location — multiple boilers — vertical vent/sidewall air.
VENT PIPING (through roof)
Multiple boiler applications
apart.
Figure 42
Sidewall air termination assembly —
vertical vent with sidewall air.
Side air intake/through the roof vent must
use Combustion Air Pressure Kit, see Fig-
ure 96, page 105 for Kit part number.
1. Air piping — must extend
through wall enough for
complete engagement of the
air termination elbow.
2. Air termination elbow
— must be down-turned
90-degree elbow.
Part number 550-100-561/0224
commercial condensing gas
(continued)
— Space vents minimum 6 inches apart. Space air terminations minimum 6 inches
3. Sidewall termination plates
(hole must be just larger
than the air pipe diameter).
4. Bird screen, by installer.
- — Boiler Manual
fired water boiler
Figure 43
Direct venting — install tee on air inlet or provide means
to disassemble the air piping to allow access to the inlet
air filter.
AIR PIPING (sidewall)
1. Vent/air pipe manufac-
turer's SlimFit Vent/Air
Adapter, 8-inch outlet.
2. Vent/air pipe manufactur-
er's tee, 8-inch — orient
the tee so the cover will
be on the same side as
the boiler heat exchanger
cleanout cover.
3. A i r pipe c onnec tion,
8-inch — add vent/air pipe
manufacturer's reducer if
using 6-inch air piping.
4. Vent/air pipe manufac-
turer's cover, 8-inch.
5. Vent piping (a vent/air
pipe manufacturer's Slim-
Fit Vent/Air Adapter must
be installed at the boiler
vent connection).
Use only the vent/air piping
materials listed in Figure 22,
page 25.
43